Cable fixing device for relay protection screen of thermal power plant

The utility model discloses a cable fixing device for a relay protection screen of a thermal power plant, and relates to the technical field of cable fixing. The utility model mainly comprises: a mounting rack; the fixing mechanisms are slidably mounted on the mounting frame, the fixing mechanisms are used for fixing cables and comprise a fixing frame, two V-shaped clamping plates with opposite openings are arranged on the fixing frame, one V-shaped clamping plate is fixed on the fixing frame, and the other V-shaped clamping plate is movably arranged on the fixing frame; the driving piece is used for driving the V-shaped clamping plate to move; and the limiting nail is inserted into the mounting frame in a threaded mode, and one end of the limiting nail is used for abutting against the fixing frame so as to limit the fixing frame. When the cable fixing device is used, the distance between the fixing frames is adjusted according to a drawing, limiting is conducted through the limiting nails, then a cable penet